Here's what rhymes with multilateral.

Consider these alternatives

bilateral / natural negotiation / relation cooperation / operation negotiations / relations dialogue / talk wto / pseudo liberalization / relation consultations / relations constructive / destructive mechanisms / conditions nations / relations mechanism / given treaties / entreaties multilateralism / bilateralism liberalisation / relation consultation / operation coordination / education institutions / solutions proliferation / information trilateral / natural initiatives / derivatives implementation / operation trade / made nonproliferation / information monetary / very forum / foreign